org.racob.com.ComFailException: IEnumVARIANT::Net when using an ASSOCIATORS query

[slackfan]

Hi,

when calling the example snippet

require 'win32ole'

locator = WIN32OLE.new('WbemScripting.SWbemLocator')
service = locator.connectServer("./", "", "", "")
list = service.execQuery("ASSOCIATORS OF {Win32_LogicalDisk='C:'}")
# puts list.ole_get_methods
list.each do |item|
 puts item.Caption
end

The snippet crashes with the following exception.

EnumVariant.java:-2:in `Next': org.racob.com.ComFailException: IEnumVARIANT::Net
        from EnumVariant.java:47:in `hasMoreElements'
        from RubyWIN32OLE.java:64:in `each'
        from MethodHandle.java:636:in `invokeWithArguments'
        from InvocationLinker.java:232:in `invocationFallback'
        from playme.rb:7:in `__file__'
        from playme.rb:-1:in `load'
        from Ruby.java:811:in `runScript'
        from Ruby.java:804:in `runScript'
        from Ruby.java:673:in `runNormally'
        from Ruby.java:522:in `runFromMain'
        from Main.java:395:in `doRunFromMain'
        from Main.java:290:in `internalRun'
        from Main.java:217:in `run'
        from Main.java:197:in `main'

The query should be valid according to http://msdn.microsoft.com/en-us/library/aa384793(v=vs.85).aspx

Used versions:

• JRuby-1.7.12
• Oracle JDK 1.7u60 64bit
• jruby-win32ole version 0.85
• Operating systems: Windows 7 Professional and/or Windows Server 2008 R2, both 64bit

Do you have any idea why this happens? Is the usage wrong or is this an issue with the gem? An explanatory comment or workaround would be great and a huge help.

Thanks